But ye shall receive power, after that the Holy Ghost is come upon you. – Acts 1:8

The Holy Spirit does not educate us, or give us culture after the common method of men, and yet there is an inner education and a higher culture which is much more to be desired, which comes from Him. He leads us into all truth; He makes us feel the force of truth; He gives us a grip of truth; He writes truth upon the heart; He applies it to the understanding. Many a man has become quick of understanding in the fear of the Lord, who was very slow of understanding in other respects. The Holy Spirit takes the fool, and makes him know the wonders of redeeming love. It is amazing how persons, of very scanty gifts, and very small attainments, have, nevertheless, become wise toward God, their mental faculties being quickened with regard to heavenly things in a very remarkable manner.

The power of the Spirit is also, in part, moral power. He gives to men qualities that make them strong and influential over their fellow-men; He imparts dauntless courage, calm confidence, intense affection, burning zeal, deep patience, much-enduring perseverance. Many other hallowed influences besides these are graces of the Spirit of God, which form in men a moral power exceedingly useful and exceedingly forcible. I have known men who have been slow of speech, and who have exhibited very few gifts, who have, nevertheless, been very strong men in our assemblies, true pillars of the church, for piety is power, and grace is power. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2330.cfm